Preparation : Rinse chicken and pat dry. Cut chicken into 1-inch pieces. Place frozen vegetables in crockpot; sprinkle with tapioca. Place chicken pieces on top of vegetables. In a small bowl, mix chicken broth, brown sugar, teriyaki sauce, mustard, orange peel, and ginger. Pour sauce over chicken pieces. Cover; cook on Low for 4 to 6 hours or on High for 2 to 3 hours. Serve over hot cooked rice.